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#include <stdio.h>
#include <xmmintrin.h>

#ifdef __SSE2__
#include <emmintrin.h>

typedef union
{
  __m128i x;
  char a[16];
} union128i_b;

typedef union
{
  __m128i x;
  unsigned char a[16];
} union128i_ub;

typedef union
{
  __m128i x;
  short a[8];
} union128i_w;

typedef union
{
  __m128i x;
  unsigned short a[8];
} union128i_uw;

typedef union
{
  __m128i x;
  int a[4];
} union128i_d;

typedef union
{
  __m128i x;
  long long a[2];
} union128i_q;

typedef union
{
  __m128d x;
  double a[2];
} union128d;
#endif

typedef union
{
  __m128  x;
  float a[4];
} union128;

#ifndef ARRAY_SIZE
#define ARRAY_SIZE(A) (sizeof (A) / sizeof ((A)[0]))
#endif

#ifdef DEBUG
#define PRINTF printf
#else
#define PRINTF(...)	
#endif

#define CHECK_EXP(UINON_TYPE, VALUE_TYPE, FMT)		\
static int						\
__attribute__((noinline, unused))			\
check_##UINON_TYPE (UINON_TYPE u, const VALUE_TYPE *v)	\
{							\
  int i;						\
  int err = 0;						\
							\
  for (i = 0; i < ARRAY_SIZE (u.a); i++)		\
    if (u.a[i] != v[i])					\
      {							\
	err++;						\
	PRINTF ("%i: " FMT " != " FMT "\n",		\
		i, v[i], u.a[i]);			\
      }							\
  return err;						\
}

#ifdef __SSE2__
CHECK_EXP (union128i_b, char, "%d")
CHECK_EXP (union128i_ub, unsigned char, "%d")
CHECK_EXP (union128i_w, short, "%d")
CHECK_EXP (union128i_uw, unsigned short, "%d")
CHECK_EXP (union128i_d, int, "0x%x")
CHECK_EXP (union128i_q, long long, "0x%llx")
CHECK_EXP (union128d, double, "%f")
#endif

CHECK_EXP (union128, float, "%f")

#define ESP_FLOAT 0.000001
#define ESP_DOUBLE 0.000001
#define CHECK_ARRAY(ARRAY, TYPE, FMT)                   \
static int                                              \
__attribute__((noinline, unused))                       \
checkV##ARRAY (const TYPE *v, const TYPE *e, int n)     \
{                                                       \
  int i;                                                \
  int err = 0;                                          \
                                                        \
  for (i = 0; i < n; i++)                               \
    if (v[i] != e[i])                                   \
      {                                                 \
        err++;                                          \
        PRINTF ("%i: " FMT " != " FMT "\n",             \
                i, v[i], e[i]);                 \
      }                                                 \
  return err;                                           \
}

CHECK_ARRAY(i, int, "0x%x")
CHECK_ARRAY(l, long long, "0x%llx")

#define CHECK_FP_ARRAY(ARRAY, TYPE, ESP, FMT)                   \
static int                                              \
__attribute__((noinline, unused))                       \
checkV##ARRAY (const TYPE *v, const TYPE *e, int n)     \
{                                                       \
  int i;                                                \
  int err = 0;                                          \
                                                        \
  for (i = 0; i < n; i++)                               \
    if (v[i] > (e[i] + (ESP)) || v[i] < (e[i] - (ESP))) \
    if (e[i] != v[i])                                   \
      {                                                 \
        err++;                                          \
        PRINTF ("%i: " FMT " != " FMT "\n",             \
                i, v[i], e[i]);                 \
      }                                                 \
  return err;                                           \
}

CHECK_FP_ARRAY (d, double, ESP_DOUBLE, "%f")
CHECK_FP_ARRAY (f, float, ESP_FLOAT, "%f")

#ifdef NEED_IEEE754_FLOAT
union ieee754_float
{
   float d;
   struct 
   {
      unsigned long frac : 23;
      unsigned exp : 8;
      unsigned sign : 1;
   } bits __attribute__((packed));
};
#endif

#ifdef NEED_IEEE754_DOUBLE
union ieee754_double
{
   double d;
   struct 
   {
      unsigned long frac1 : 32;
      unsigned long frac0 : 20;
      unsigned exp : 11;
      unsigned sign : 1;
   } bits __attribute__((packed));
};
#endif